Wells – Processes – Distinct – separate injection and producing wells
Patent
1988-05-23
1989-07-18
Suchfield, George A.
Wells
Processes
Distinct, separate injection and producing wells
166273, 166281, 166294, 166295, E21B 33138, E21B 4320
Patent
active
048484644
ABSTRACT:
A method for minimizing blockage in a zone of lesser permeability when injecting gels into a formation during profile control. A solidifiable gel containing a gel breaker is injected into the formation where it enters a zone of lesser and a zone of greater permeability. Said gel blocks pores in the zone of lesser permeability. Another solidifiable gel lacking a gel breaker is injected into the zone of greater permeability where it subsequently solidifies. Said gel contained in the zone of lesser permeability liquefies thereby unblocking this zone. Afterwards, a water-flooding enhanced oil recovery method is directed into the zone of lesser permeability.
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Hoefner Mark L.
Jennings, Jr. Alfred R.
Malone Charles A.
McKillop Alexander J.
Mobil Oil Corp.
Speciale Charles J.
Suchfield George A.
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